Their are four dimensions to language: 1. Reading 2. Writing 3. Speaking 4. Listening It depends on your goals. Some people might be content to only learn reading and writing in another language. In that case, taking grammar classes online and doing chats with native speakers can help. Then, try reading newspapers online and books in the language you want. However, with speaking and listening, listening is the most important because if you can't understand what someone is saying it doesn't matter what you say. So, it would be good to watch television and movies, while listening to the radio and native speakers talk to pick up the pronunciation and context.